Air compressor



AIR COMPRESSOR Filed May 18. 1927 L. H. JWA/VO/V INVENTOR A TTORNE y Patente'cl Nov. 19, 1929 PATENT OFFICE.

moma'onn H. SWANSON, or momma, ILrmoIs AIR oomrnEsson Application filed May 18,

My present invention pertains to motor driven devices for compressing air but more particularly to a modified internal combustion engine or a modified head for such an engine whereby air can be pumped into a suitable reservoir provided for the reception thereof. It will of course be understood that such a construction can be used for the pumping of other substances than air and, therefore, that this disclosure is to be interpreted as illustrative only.

Among the objects of my invention are to rovide a simple satisfactory construction or the urpose indicated; to provide a modified engine head which may be substituted for the ordinary head ofan internal combustion motor to convert the same into a fluid pump; to provide an improved combined motor and pump; and such further objects,

advantages and capabilities as will hereafter appear and as are inherent in the construction disclosed. My invention further resides in the combination, construction and arrangementof parts illustrated in the accompanying drawing and, while" I have shown therein what is now considered the preferred embodiment of my construction, I

' desire the same to be understood as illustrative only and not as limiting said invention.

In the annexed drawing Fig. 1.is a fragmentary longitudinal vertical section of a motor havingm improvement applied thereto; Fig. 2 is a. ottom plan view of a motor head constructed in ccordance with this invention; Fig. 3 is a vertical transverse section through Fig; 1 substantially along the plane indicated by the line 3-3, Fig. 2.

- Referring more in detail to the annexed drawing), numeral 1 denotes in general the engine lock and 2 the engine head. ,Numerals 3, 4, 5 and 6 denote the pistons located, respectively, in the cylinders 7, 8, 9 and 10. These'cylinders and pistons are of ordinary construction and therefore no further disclosure thereof will be given.

The head 2 is provided with a water jacket 11 which communicates with the corresponding .water jacket in the engine block, in accordance with prevailing custom. In the central portion of this head there is some- 1927. Serial N0. 192,191.

what of a modification however, as cylindrical or oval portions are cast integral with the- Walls of the head and extend therethrough to furnish entrance and exit means for the air being pumped. These portions are provided with openings for the passage of the air, said openings being controlled by suitable valves.

.This construction will now be described in respectively, at 15. Tubes 16 and 17 are screwed into the perforations 13 and 14 and have valve seats against which the valves 18 and 19 are seated. Perforated blocks 20, provided with perforations 21 for reception of the valve stem and 22 for the passage of air, are mounted in the tubes 16 and 17. It will of course be understood that these blocks must be rigidly fixed in the tubes in order that they will not become displaced on account of air pressure. Springs 23 are provided to maintain the valves normally closed, the springs being held in place by suitable means 24 such as nuts. Tubes 25 are held in the openings 14" by reason of their screwthreaded connection with the internally and externally screw-threaded rin s 26 mounted upon the outer ends of the tu es 17. Sultable pipes 27 connect the tubes 25 with the pipe 28 leading to the pressure tank. 0 suitable means such as a coupllng or right and left-hand threads may be provided to enable the parts to be assembled.

Referring now more particularly to Figs. 2 and 3, numeral 30 designates the spark plug holes through the engine head, in which the spark lugs for cylinders 7 and 10 are mounte On the under face of the head are depressions corresponding to the various cylinders of the engine. These depressions comprise two parts 31 and 32 more or less completely separated from each other. The ,part 31 is that part which covers the'normal operating cylinders of the engine and the part 32 is the valve and firing chamber of the engine. This latter part provides a space into "which the engine valves may move when they are unseated from their seats in the engine block. This space also furnishes a space into which the spark plugs may reach for the firing of a combustible mixture. In my new construction, no spark-plug opening is provided inconnection with the chambers 32 of cylinders Sand 9, as these two cylinders are used for pumps to compress theair or other fluid being pumped. The valves in connection with these two cylindersare not removed or otherwise interfered with. But these valves are prevented from interfering with the operation'of the pump by reason is drawn through the res that the inta webs or flan'ies '33. It will therefore be seen e and outlet valves of thesetwo cylinders can not "communicate with the cylinders themseIVes but only with the parts 32 of the headdepressio They therefore do not interfere with the functioningv ofthe apparatus in any way. Therefore, when either piston'4 or 5 moves the cylinder and when: e piston'moves upwardly the air lifts the valve 19 and is forced out through the storage tank or reservoir. mally hold the valves 18. and 19 c osed. 4

From the foregoin it will be understood that part of the cylin ers act as compression- .cylinders for the, operation of the engine while the rest act as compressors to force the pumped fluid into the. storage tank. The

various parts of the engine head serve as' .cylinder caps or" closures for the various cylinders of the engine. The device may beused in somewhat modified forms with any ordinary internal combustion engine,j'the one shown being designed for use with the engine of a Ford automobile.v The fluid pumped by this compressor may be. used for any purpose to which such a fluid isadapted, such as operating air paint brushes,

automobile tires, etc-.-

With the "present constructionit issonly necessary to remove the usual head and gasket and substitutetherefor the new head and gasket of my invention; The engineis then ready to be used as a compressorfor any purpose to which it is adapted.

While I have shown and described herein what is now considered the preferred .em-

bodiment of my invention,.I desire it understood that variouschanges in the construc;

tion 'and operationthereof may begmade without departing from the spirit of said invention, said disclosurebeing intended as illust ative only and not as this downwardly, air, ective valve 18 into pipes 27 and 28 into the Sprin 23 noring the upper ends of t admitting air to valve chambers.

invention. to the closed.

'Having now described my invention, I claim: w 1. A cylinder head for converting an inparticular structure disternal combustion engine into a motor driven pump, said head being outwardly similar to the'usual head of the engine but having a flange on the face thereof adjacent the enne block to isolate the valve compartment ar one of the cylinders from the piston compartment thereof, said head being'p'rovi'ded with inletand outlet valves cooperatingwith the said cylinder to enable it to functlon as a pump. y

2. An engine cylinder head in which part of the cylinder caps have openings, tubes; extending through the openlngs of the head, intake and outlet valves being mounted in the tubes, each of said c linder caps having.

such tubes being divide into two compartments corresponding respectively to the normal cylinder and valve compartments of the head. 7

a cylinder head having depressions on its under face corres onding tothe compression and firing cliam ers of an engine head," some of said depressions having openings leadin therefrom to the'upper' surface of the liea 8. In a structure of the character described,

inlet and outlet valves controlling said-openings and means separating the engine valve chambers from the head valve chambers. v

'4. In an engine, a c linder head for close cylinders, said head havin separate inlet and outlet openings exten ing therethrough from some of the pylinders to the exterior face of the head,

said openin s being independent of the normal inlet am l outlet openings of the cylinders and inlet and outlet valves controlling said separate inlet and outlet openings.

5. A modified engine cylinder head Eto cover the cylinders of an internal combustion engine, said head having depressions therein 'correspondin I to the normal compression chambers of t e engine and other depressions 'corresponding to the valves of said engine,

some of the latter being separated structurally from the former so that in usenfuel can not reach thecorresponding cylinders, means said 0 linders, and means for exhausting air (there; to carry said air forced out of said cylinders, to a storage reservoir. 4 v 6. A c linder' head for a motor havingsomeof t e compression and valve chambersof normal form and some provided with means separating, the compression fromthe' valve, chambers, said head having inlet and outlet orts openingthrough' the head between t e, air and the compression chambers which are separated from om, common means their respective some of the compression and valve chambers of normal form and some provided with means separating the compression from the valve chambers, the compression chamber head walls of the last mentioned compression-chambers being shaped and positioned to reduce the capacity of said compressionchambers to a minimum Yolume, the head being provided with separate inlet and outlet ports and spring actuated valves controlling said ports, said ports forming a controlled means of communication between the air and the second mentioned compression chambers.

In witness whereof, I hereunto subscribe my name to this specification.

LEONFOBD H. SYVANSON. 

